"station_id"	"year"	"Jan"	"Feb"	"Mar"	"Apr"	"May"	"Jun"	"Jul"	"Aug"	"Sep"	"Oct"	"Nov"	"Dec"
171833	1970	    	    	    	    	    	    	    	    	    	    	    	    
171833	1971	    	    	    	    	    	    	    	    	    	    	    	    
171833	1972	    	    	    	    	    	    	    	    	    	    	    	    
171833	1973	    	    	    	    	    	    	    	    	    	    	    	    
171833	1974	    	    	    	    	    	    	    	    	    	    	    	    
171833	1975	    	    	    	    	    	    	    	    	    	    	    	    
171833	1976	    	    	    	    	    	    	    	    	    	    	    	    
171833	1977	    	    	    	    	    	    	    	    	    	    	    	    
171833	1978	    	    	    	    	    	    	    	    	  9.6	  5.9	 -0.4	 -6.3
171833	1979	 -6.7	    	    	    	    	    	    	    	    	    	    	    
171833	1980	    	    	    	    	    	    	    	    	    	    	    	    
171833	1981	    	    	    	    	    	    	    	    	    	    	    	    
171833	1982	    	    	    	    	    	    	    	    	    	    	    	    
171833	1983	    	    	    	    	    	    	    	    	    	    	    	    
171833	1984	    	    	    	    	    	    	    	    	    	    	    	    
171833	1985	    	    	    	    	    	    	    	    	    	    	    	    
171833	1986	    	    	    	    	    	    	    	    	    	    	    	    
171833	1987	    	    	    	    	    	    	    	    	    	    	    	    
171833	1988	    	    	    	    	    	    	    	    	    	  4.8	  1.5	 -6.9
171833	1989	 -7.1	 -7.4	 -4.2	  1.5	 12.0	 15.1	 16.8	 16.5	 12.0	  6.0	 -0.6	 -8.9
171833	1990	 -5.7	 -7.0	 -2.7	  3.9	  9.3	 16.1	 18.4	 19.4	 12.8	  8.3	  1.2	 -3.9
171833	1991	 -8.5	 -5.6	 -1.6	  4.2	 11.6	 16.2	 18.3	 18.5	 11.4	  7.5	  1.2	 -7.5
171833	1992	 -8.0	 -7.5	 -4.9	  2.3	 10.3	 15.7	 15.9	 17.4	 13.3	  5.2	 -1.1	 -5.3
171833	1993	 -7.6	 -8.7	 -3.7	  3.8	  9.7	 14.4	 17.7	 18.3	 12.6	  4.0	 -0.2	 -3.8